X*2X3x-4 factorise the question

Fine the area of the kite. a. 90 sq. units b. 9 sq. units c. 180 sq. units d. 45 sq. units

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units